as president obama honored civil rights icon cesar chavez -- >> the movement he helped to lead was sustained by a generation of organizers who stood up and spoke out and urged others to do the same. >> reporter: his campaign worked to shred gop nominee mitt romney's foreign policy chops, rolling out this hard-hitting web ad reminding voters of what they called stumbles on the world stage. >> governor romney not too long ago said, the russian federation is our number one strategic threat. come on, think. that isn't the case. >> reporter: and this tv ad now running in the important battleground state of virginia. >> when our u.s. diplomats were attacked in libya, "the new york times" said romney's approach showed a lack of -- >> reporter: and a conference call with former secretary of state madeleine albright and ben le bolt. >> he's changed his mind on a number of issues, in terms of libya. at first, he was for the intervention. now he's against it. 's unclear where he is on syria. >> behind the tough talk, he's an erratic, unsteady in his audition on the world stage. >> reporter: the obama c